def revcheck(request):
payload = request.params["payload"]
checksum = request.params["checksum"]
payload_format = request.params.get("payload_format", "guess")
# Attempt parsing payload
parsed_payload = _attempt_parse_payload(payload, payload_format)
parsed_checksum = _attempt_parse_checksum(checksum)
# Attempt parsing provided checksum
predefined_classifier = PredefinedCRCAlgorithClassifier()
match = predefined_classifier.find_match(parsed_payload, parsed_checksum)
if match is None:
return {
"result": "no_algorithm_found",
"message": "Data was valid but not matching checksum algorithm was found"
}
else:
return {
"result": "success",
"algoriths": [
{"type": "predefined",
"key": match}
]
}
class TestPredefinedCRCAlgorithmClassifer(unittest.TestCase):
def setUp(self):
self.classifier = PredefinedCRCAlgorithClassifier()
def test_crcmod_crc16(self):
crcfun = mkPredefinedCrcFun("crc-16")
self.assertEqual(crcfun('123456789'), 0xBB3D)
def test_classify_crc16(self):
classification = self.classifier.find_match('123456789', 0xBB3D)
self.assertEqual(classification, 'crc-16')
def setUp(self):
self.classifier = PredefinedCRCAlgorithClassifier()
